205303430 has 16 divisors (see below), whose sum is σ = 375605424. Its totient is φ = 80774880.

The previous prime is 205303429. The next prime is 205303447. The reversal of 205303430 is 34303502.

205303430 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167672 + ... + 168891.

It is an arithmetic number, because the mean of its divisors is an integer number (23475339).

Almost surely, 2^205303430 is an apocalyptic number.

205303430 is a deficient number, since it is larger than the sum of its proper divisors (170301994).

205303430 is a wasteful number, since it uses less digits than its factorization.

205303430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336631.

The product of its (nonzero) digits is 1080, while the sum is 20.

The square root of 205303430 is about 14328.4133804131. The cubic root of 205303430 is about 589.9276268595.

Adding to 205303430 its reverse (34303502), we get a palindrome (239606932).

The spelling of 205303430 in words is "two hundred five million, three hundred three thousand, four hundred thirty".